title: Field physiology: physiological insights from animals in nature.
mesh_terms: D000818:Animals; D000835:Animals, Wild / Q000502:physiology*; D001717:Birds / Q000502:physiology; D001833:Body Temperature Regulation / Q000502:physiology; D004242:Diving / Q000502:physiology; D004702:Endocrine Glands / Q000502:physiology; D005399:Fishes / Q000502:physiology; D008322:Mammals / Q000502:physiology; D019368:Nature; D012098:Reproduction / Q000502:physiology